Original Meteor for 2020 Official Shirt

 Any calcium you find will be bound up typically as early solar CAI (calcium aluminum-rich inclusions) in chondrites, which tend to be organic-rich in content as a category of meteorite (especially carbonaceous chondrites, which can be 20% water). There are also neat things within, like pre-solar grains that comprise of refractory materials scattered by the earliest stars that predate the Sun. The diagram is really meaningless for meteoric and planetary studies.

Buy it: Original Meteor for 2020 Official Shirt